Cooling system for blast-furnaces.



J; n. MEANS. COOLING SYSTEM FOR BLAST FURNACES. AQPLIOATION FILED JUNE21, 1912.

1 1 0%,2s1iv Patented July 7, 1914 T'IOHN HUGH MEANS, OF MA'YVILLE,WISUUNBIN.

Specification of Letters Patent.

COOLING SYSTEM FOR BLAST-FURNACES Patented July r, 191

Application filed June 21, 1912. Serial No. 705,057.

To all whom it may concern Be it known that'I, JOHN H. iIEANSh, acitizen of the United States, residing at Mayville in the county ofDodge and State of lVisco' sin, have invente'g pertain new and use'fmilIprovements in Cooling Systems for Blast-Fix naces; and I clo herebydeclare the following to be a full, clear. and exact description andspecification of the invention,

such as w ll enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to a. means for the thorou 'h cooling, protectionand preservation of the brick work contained in the inwalls of blastfurnaces by means of a plurality or seris of water pipes arranged,placed and joined in the manner hereinafter indinoted; and the objectsof my im rovement or device pure -first, to'provide t e thorough coolingand preservation of the brick work' contained in the inwalls of blastfurnaces; second, to secure all the advanta es heretofore attained bythe so-calle external method of cooling blast furnace walls withoutincurring the disadvantages of spray pipes which clog causing hot spotson the furnace shell, w thout the collection of sediment on shell, whichdecreases the cooling effect and without splashing or slopping of waterwhich is attendant upon surface cooling,-third, toprevent and avoidtroublesome leaks caused by the loosening of joints in cooling pipes nowemployed,-fourth, to prevent and avoid the corrugation of the nick workwhich now occurs inhorizontal plate cooled blast furnace inwalls,-fifth,to secure any or-all of the advantages of the present so-called thinWalled blast furnaces without incurring their disadvantages, sixth, toretain a very large proportion of thelatent heat contained in thefurnace wall and thereby materially reduce the coke consumption'of thefurnace. I secure and attain these objects and advantages by theconstruction shown in the accompanying drawing which represents avertical section of a blast furnace provided with this improvement.

' A represents a blast'furnace which may be of any desired constructionand provided with any desired appliances.

As this invention is not confined in its up plication to any particularconstruction of blast furnace, and is equally applicable to either anold or new furnace, a detailed descri tion of tho difi'erent parts ofthe furnace i ustrated in the drawing is not deemed necessary.

. B represents the bosh of the furnace-C the top-mud D the inwall,extending upwardly from the mantle E, which is carried on the columns F,to the top G.

G represents the cooling pipes each furnished with inlet and outletbranches H and I respectively. The number and leugth of pipes employeddepend on the size of furnace. The pipes G are arranged vertically inthe furnace wall, and may extend from any desired point above the mantleE, to any desired height, but as the furnace tapers toward the top it isdesirable to use a num ber of sets of pipes, as shown in the draw ingwith a less number of pipes in the upper set or sets, thereby keepingthe distance be tween the pipes more uniform. Each pipe (I is embeddedin the wall of the furnace and located 12 inches (more or less) from theinner surface of the furnace wall.

The inlet and outlet branches H and l are formed integrally with thepipes G by bendlug them or are welded thereto so as to avoid fittings orjoints which are liable to bccoine loose and leaky and occasion troublelllSltlO thc'furnace wall. Outside of the iuwnll I) and tbc'jackct orsbcll J surromuling it, the

inlcu branches II of the several cooling pipes G are connected by elbowsK and pi cs L with an annular water supply pipe hi sur rounding thefurnace above and adjacent to the mantle E. The inlet branches ll or thepipes L connecting tbem with the supply pipe M are provided with valves.N for con. trolling the supply of water to the several cooling pipes Gseparately, so that if any of said pipesis broken. or defective it mayhe cut out without'ntlcctlng the operation of the others and withoutmaterially impairing theprotection afforded by the system as a whole tothe inwnll D. The outlet branche l of the several cooling pipes (l areconnect ed by elbows O with overflow or discharge pipes P which extenddownwardly outside of the shell J and open at their lower ends into anopen annular trough Q surrounding the furnace, thus ail'ordiln; means inconstant and clear view for determining whcthcr water is flowing freelythrough the several cooling, pipes G.

The construction of the several single cooling pipes G integrally withinlet and outlet branches ll and I extending directly outward throughthe inwall D as herein shown and described, not only facilitates layingthe wall in which they are embedded, but also avoids pipe joints orfittings which are liable to become loose and leakwithin the wall. Thearrangement of the pipes and their connections and the provision ofthcseveral single cooling pipes G with separate supply and dischargeconnections attheir lower and upper ends respectively, as shown, alsoavoids pockets or bonds in which sediment is liable to lodge and clogthem and causes an upward flow oi water through them, keeping themcompletely filled and serving more eiiectively to keep them clear ofdirt and sediment.

I am aware that the idea oi cooling by means of naked water pipesembedded in a furnace bosh and open hearth port arches, is old; and thatvarious methods and means have been. employed for cooling the bosh andcrucibles of blast furnaces, as well as the arch in open hearth portsand heating furnaces, but so far as I. am aware a cooling systemconsisting of a series of single, vertically disposed water pipesembedded in the inwall of a blast furnace and having j ointless branchesextending directly outward through the furnace wall and each having anindependent Water supply connection with its lower branch and an opeirand visible discharge connection with its upper branch is new.

It is evident that many slight changes in the construction and relativearrangement of parts, might be resorted to without involving a departurefrom this invention, and hence 1 would have it understood that I do notrestrict myself to the exact construction and arrangement of parts shownand described. Having now described my invention, what ll claim as newand desire to secure by Letters Patent isi 1. A cooling system. forblast furnaces comprising a series of single vertically disposedjcintless water cooled pipes embedded at intervals in the inwal]. abovethe bosh of a furnace and having at their lower and upper endsrespectively inlet and outlet branches formed integrally therewith andextending directly outward thereirom tl' rough circling the furnace, anddischarge pipes leading downwardly from the outlet branches outside thefurnace and openinp into said trough. i

3. A cooling comprising single vertically dis msedcooliiur pipesembedded at intervals within, and around the inwall of'a furnace, awater ,supply pipehavine' separate valve controlled connections with thelower ends of the severalcooling pipes outside the furnace, an opentrough surrounding the furnace, and discharge connections leadingfrom-the upper ends of theeooling pipes and opening in clear viewintosaid trough;

4. A cooling system for blast furnaces comprising a watersupply pipesurrounding the furnace, a numberof series arranged .one above anotherof separate vertically. disosed coolingpipes Bll'llJOClllGCl atintervals within and'around tlic inwall of a furi'lace above the bosh'and each having; a valve controlled connection at its lower end withsaid supply pipe and a discharge counectipn at .its upper end;

JonN noon: Marius.

Witnesses:

W. R. Hines, I 1 E. E5. O'Connor.

System for blast furnaces

